A locked trunk and a secret diary lead Mallory and the Baby-Sitters into a big mystery in this entry in the classic hit series. Mallory and Claudia are helping Stacey unpack from her move back to Stoneybrook when they find an antique trunk in the McGill’s attic. Stacey doesn’t want the dusty thing, so she gives the trunk to Mallory . . . who finds an old diary at the bottom of it. The diary belonged to Sophie, a girl who lived in Stacey’s house in the 1890s. As Mallory reads deep into Sophie’s diary, she discovers a mystery on their hands to solve, because Stacey’s house isn’t big enough for her, her mom . . . and a family of ghosts! The best friends you’ll ever have—with classic BSC covers and a letter from Ann M. Martin!

Mallory discovers an old diary in the McGill's attic written by a young girl who lived in the house in the late-nineteenth century and, in the course of reading the fascinating journal, uncovers a shocking mystery.

Stacey's parents are getting a divorce. Stacey is sad and angry, and she has a big decision to make--stay in New York with her father, or move back to Stoneybrook with her mother.

Mary Anne and Stacey are in Sea City working as mother's helpers for the Pike family. When each of the girls meets up with her boyfriend from last summer, things start to get complicated.

The hit series is back, to charm and inspire another generation of baby-sitters! There's some bad news in the Pike family: Mallory's dad has just lost his job. And since money is going to be tight until Mr. Pike finds a new job, all eight of the Pike kids decide to help out.Nicky gets a paper route, Vanessa tries selling her poetry, and Mallory takes a baby-sitting job in Kristy's ritzy neighborhood. But being around the Delaneys only makes Mallory feel poor. They have a cat that cost $400 and tennis courts in their backyard!Poor Mallory--she needs the Baby-sitters now more than ever!The best friends you'll ever have--with classic BSC covers and a letter from Ann M. Martin!

At long last, Dawn's mother and Mary Anne's father have decided to get married!

The hit series is back, to charm and inspire another generation of baby-sitters! When Dawn starts getting threatening notes and odd phone calls while she's baby-sitting, she doesn't know what to do. The notes are signed "Mr. X," and they're beginning to get scary. Normally, she'd tell the rest of the BSC, but this time things are different.The kids at Stoneybrook Elementary are having a Sitter of the Month Contest. The Sitter of the Month has to be someone who is in control--someone whose jobs always go smoothly. Dawn doesn't want to blow her chances at winning. But what if she's in real danger?The best friends you'll ever have are detectives, too!

One of a series of stories that revolve around the babysitters club. Dawn and Mary Anne are now stepsisters, but perhaps sharing parents and a bedroom isn't such a good idea. Dawn thought she'd always wanted a sister, but she didn't count on Mary Anne - the wicked stepsister.

Mallory has a new diary, and big news to write in it: a cute fifth-grade boy LIKES her! The only problem: Mallory's friends are more excited about it than she is. Mallory's not sure what to do, what to say on the phone, or even how she feels. Her best friend, Mary Ann, however, is sure about what Mallory should feel and do. But when Mallory follows Mary Ann's advice, she winds up hurting another friend—and gets in BIG trouble. Can Mallory make things right and learn to follow her own heart?

Kristy looks for a way to help a little girl with autism in this special entry in the classic hit series. Kristy’s newest baby-sitting charge is Susan Felder, who goes away to a special school. Susan isn’t like most kids. While she can play the piano and sing beautifully . . . she can’t talk to anyone. Susan is autistic. She lives locked inside her own secret world. Kristy thinks it’s unfair that Susan has to be sent off to school and is treated differently from everyone else. But Kristy’s going to try to change that—by showing everyone that Susan’s a “regular” kid, too. And then maybe Kristy’s new friend can stay in Stoneybrook for good. The best friends you’ll ever have—with classic BSC covers and a letter from Ann M. Martin!